Vaseline glass was primarily made from 1840 up to just before World War II.  Vaseline glass, also known as Uranium Glass, was most popular from the 1880s to the 1920s.  The government banned Vaseline Glass (and all other Uranium products) from 1943 to 1958.  The production of this glass was continued from 1959 to the present day.  There was a high demand for the greener shades of Vaseline Glass, so people added more iron oxide into the glass mixture to create this affect.  This plate is in great condition, and shows no signs of scratches or damage.